对多聚散聚合物在多孔纤维素纤维上吸附的分析
Robert H Pelton1, Abdollah Karami1, Jose Moran-Mirabal2
1Department of Chemical Engineering, McMaster University, 1280 Main Street West, L8S 4M1, Hamilton, ON, Canada.
Nordic pulp & paper research journal
|August 30, 2024
概括
这项研究详细介绍了聚合物对木纤维的吸附,这对于造纸至关重要. 吸附异温的分析提供了关键参数,如最大吸附能力和聚合物对纤维表面的可访问性.
科学领域:
- 材料科学 材料科学 材料科学
- 合体和表面化学
- 纸制造技术 纸制造技术 纸制造技术
背景情况:
- 阴性水溶性聚合物吸附于负电荷的木纤维上,这是制造纸的关键工艺.
- 了解这种吸附对于优化纸张性能和生产效率至关重要.
研究的目的:
- 在木纤维上分析聚合物吸附异热体.
- 提取关键吸附参数 (Γmax, ΓI, fI, Γme) 以进行透明的分析.
- 为了将聚合物分子重量分布与纤维表面的吸附行为相关联.
主要方法:
- 使用阴离子聚合物和木纤维的吸附实验.
- 用直接图表和异热图表呈现的吸附数据的分析.
- 从异热体数据计算关键吸附参数.
- 估计聚合物分子重量分布在内部和外部纤维表面.
主要成果:
- 在木纤维上分析聚合物吸附异温的既定方法.
- 定义的参数,如最大吸附能力 (Γmax) 和聚合物可访问性 (fI).
- 证明了与分子重量分布相结合的异温数据的实用性,以表征吸附聚合物状态.
结论:
- 吸附异热分析为聚合物纤维相互作用提供了透明的见解.
- 来自异热体的关键参数量化吸附能力和聚合物分布.
- 吸附聚合物的分子量分析提供了对表面相互作用和可访问性的进一步了解.
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